The situation: a three 500gb disk raidz array. One disk breaks and you replace it with a new one. But the new 500gb disk is slightly smaller than the smallest disk in the array.
I presume the disk would not be accepted into the array because the zpool replace entry on the zpool man page says "The size of new_device must be greater than or equal to the minimum size of all the devices in a mirror or raidz configuration."[1] I had expected (hoped) that a raidz array with sufficient free space would downsize itself to accommodate the smaller replaced disk. But I've never seen that function mentioned anywhere :o) So I figure the only way to build smaller-than-max-disk-size functionality into a raidz array is to make a slice on each disk that is slightly smaller than the max disk size, and then build the array out of those slices. Am I correct here? If so, is there a downside to using slice(s) instead of whole disks? The zpool manual says "ZFS can use individual slices or partitions, though the recommended mode of operation is to use whole disks." ["Virtual Devices (vdevs)", 1] [1] http://docs.sun.com/app/docs/doc/819-2240/zpool-1m?a=view This message posted from opensolaris.org _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
